21755880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{271}}^1$

素因数の和:511

約数の個数: 96

約数和(自身を含む): 71285760

約数和(自身を除く): 49529880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 223, 271, 360, 446, 542, 669, 813, 892, 1084, 1115, 1338, 1355, 1626, 1784, 2007, 2168, 2230, 2439, 2676, 2710, 3252, 3345, 4014, 4065, 4460, 4878, 5352, 5420, 6504, 6690, 8028, 8130, 8920, 9756, 10035, 10840, 12195, 13380, 16056, 16260, 19512, 20070, 24390, 26760, 32520, 40140, 48780, 60433, 80280, 97560, 120866, 181299, 241732, 302165, 362598, 483464, 543897, 604330, 725196, 906495, 1087794, 1208660, 1450392, 1812990, 2175588, 2417320, 2719485, 3625980, 4351176, 5438970, 7251960, 10877940, 21755880]

約数ペア:

[(1, 21755880), (2, 10877940), (3, 7251960), (4, 5438970), (5, 4351176), (6, 3625980), (8, 2719485), (9, 2417320), (10, 2175588), (12, 1812990), (15, 1450392), (18, 1208660), (20, 1087794), (24, 906495), (30, 725196), (36, 604330), (40, 543897), (45, 483464), (60, 362598), (72, 302165), (90, 241732), (120, 181299), (180, 120866), (223, 97560), (271, 80280), (360, 60433), (446, 48780), (542, 40140), (669, 32520), (813, 26760), (892, 24390), (1084, 20070), (1115, 19512), (1338, 16260), (1355, 16056), (1626, 13380), (1784, 12195), (2007, 10840), (2168, 10035), (2230, 9756), (2439, 8920), (2676, 8130), (2710, 8028), (3252, 6690), (3345, 6504), (4014, 5420), (4065, 5352), (4460, 4878)]